Results 91 to 100 of about 960 (194)

Electron Scattering by Plasmaspheric Hiss in a Nightside Plume [PDF]

Geophysical Research Letters, 2018
AbstractPlasmaspheric hiss is known to play an important role in radiation belt electron dynamics in high plasma density regions. We present observations of two crossings of a plasmaspheric plume by the Van Allen Probes on 26 December 2012, which occurred unusually at the post‐midnight‐to‐dawn sector between L ~ 4–6 during a geomagnetically quiet ...
Wenxun Zhang, Song Fu, Xudong Gu, Binbin Ni, Zheng Xiang, Danny Summers, Zhengyang Zou, Xing Cao, Yuequn Lou, Man Hua   +9 more
openaire   +1 more source

Radiation belt electron acceleration by chorus waves during the 17 March 2013 storm [PDF]

, 2014
Local acceleration driven by whistler-mode chorus waves is fundamentally important for accelerating seed electron populations to highly relativistic energies in the outer radiation belt.
Baker, D. N., Blake, J. B., Bortnik, J., Claudepierre, S., Fennell, Joseph F., Green, J. C., Hospodarsky, G. B., Kanekal, S. G., Kletzing, C A., Kurth, W. S., Li, W., Ma, Q., Ni, B., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +15 more
core   +2 more sources

Propagation analysis of plasmaspheric hiss using Polar PWI measurements [PDF]

Geophysical Research Letters, 2001
We have analyzed high‐rate waveform data, taken by the POLAR Plasma Wave Instrument at high altitudes in the equatorial plasmasphere, to study plasmaspheric hiss in the range of frequencies between 100 Hz and several kHz. These emissions are found almost everywhere in the plasmasphere, and their origin is still controversial.
Santolík, O., Parrot, Michel, Storey, L., Pickett, J., Gurnett, D.   +4 more
openaire   +1 more source

Enhanced Radiation at Aviation Altitudes and Plasmaspheric Hiss Waves—A Time Shift Analysis

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Increased radiation levels in Earth's atmosphere can present significant risks to airline pilots, passengers, and commercial space travelers. Recent findings have revealed a strong statistical link between radiation dose rates detected at aviation altitudes (>9 ${ >} 9$km) and plasmaspheric hiss wave power observed along the same magnetic ...
Homayon Aryan, Jacob Bortnik, W. Kent Tobiska, Piyush Mehta, Benjamin Hogan, Harshitha Challa   +5 more
wiley   +1 more source

Local Generation of High‐Frequency Plasmaspheric Hiss Observed by Van Allen Probes

Geophysical Research Letters, 2019
The generation of a high‐frequency plasmaspheric hiss (HFPH) wave observed by Van Allen Probes is studied in this letter for the first time. The wave has a moderate power spectral density (∼10−6 nT2/Hz), with a frequency range extended from 2 to 10 kHz ...
Zhaoguo He, Lunjin Chen, Xu Liu, Hui Zhu, Si Liu, Zhonglei Gao, Yong Cao   +6 more
doaj   +1 more source

The parameterization of wave-particle interactions in the Outer Radiation Belt [PDF]

, 2017
We explore the use of mean-value empirical wave models in diffusion models of the Outer Radiation Belt. We show that magnetospheric wave power is not normally-distributed in time and that geomagnetic activity does not provide a deterministic proxy for ...
Agapitov, Albert, Berner, Cornilleau-Wehrlin, Davis, Denton, Denton, Drummond, Fu, Glauert, Glauert, Horne, Horne, Hudson, Kennel, Laakso, Li, Li, Li, Lyons, Lyons, Mann, Mayaud, Meredith, Murphy, Orlova, Ratcliffe, Santolík, Schulz, Shprits, Spasojevic, Su, Subbotin, Tsurutani, Walt, Wing   +35 more
core   +1 more source

Occurrence Rates and Variability of Whistler‐Mode Waves in the Plasma Trough

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Numerical models of energetic electron behavior in the outer radiation belt require descriptions of the wave‐particle interactions across the inner magnetosphere. Quasilinear diffusion coefficients describe gyro‐resonant wave‐particle interactions over large time‐ and length‐scales but these must be constrained by observations to construct ...
C. E. J. Watt, N. P. Meredith, J. Wong, K. R. Murphy, I. J. Rae, S. Chakraborty, S. N. Bentley, O. Allanson, C. J. Rodger   +8 more
wiley   +1 more source

Simultaneous observation of chorus and hiss near the plasmapause [PDF]

, 2012
On 4 August 2010 a moderate geomagnetic storm occurred with minimum Dst of −65 nT and maximum Kp of 7−. Shortly after the onset of this storm, VLF chorus was observed at Marion Island (L= 2.6).
Clilverd, M.A., Collier, A.B., Delport, B., Friedel, R.H.W., Lichtenberger, J., Parrot, M., Rodger, C.J.   +6 more
core   +4 more sources

Parametric Dependence of Linear and Nonlinear Growth of Whistler‐Mode Chorus Waves

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract We calculated the linear and nonlinear growth rates of whistler‐mode chorus waves with relativistic treatment across different wave frequencies and investigated their dependence on the associated parameters, including background magnetic field strength, cold electron density, and energetic electron temperature.
Tian Zhang, Yusuke Ebihara, Yoshiharu Omura   +2 more
wiley   +1 more source

Multi‐MeV Electron Occurrence and Lifetimes in the Outer Radiation Belt and Slot Region During the Maximum of Solar Cycle 22

Space Weather, Volume 23, Issue 10, October 2025.
Abstract The Combined Release and Radiation Effects Satellite (CRRES) observed the response of the Van Allen radiation belts to peak solar activity within solar cycle 22. This study analyses relativistic and ultra‐relativistic electron occurrence and loss timescales within the CRRES High Energy Electron Fluxometer (HEEF) data set, including during ...
R. T. Desai, J. Perrin, N. P. Meredith, S. A. Glauert, S. Ruparelia, W. R. Johnston   +5 more
wiley   +1 more source